Bacteria Flashcards
Group A Strep (Streptococcus pyrogenes)
Gram+ catalyze neg beta-hemolytic Disease: Strept throat (red swollen throat/tonsilsw/ white exudate, fever, cervical LAD) rapid test (RADT)or culture treated w/ penicillin
Group B Strep (streptococcus agalactiae)
Gram +
catalase neg
beta-hemolytic
disease: neonatal meningitis, pneumonia or sepsis
Group D Strep (Enterococcus)
Gram +
catalayse neg
variable hemolytic (mostly alpha)
disease: UTI, Biliary tract infection, endocarditis
Streptococcus Pneumoniae
Gram + diplococci catalayse neg alpha-hemolytic virulence:polysacharide capsule disease: pneumonia, meningitis, otitis media
Viridians Strep
Gram+
catalayse neg
alpha-hemolytic(most)
disease: dental-S. mutans, endocarditis, abscesses
Staphylococcus Aureus
Gram + coagulase + cocci clusters catalyze + beta-hemolytic virulence: produces toxins-coag pos disease: endocarditis, septic arthritis, toxic shock syndrome, H.A. PNA, surgical wound infection, folliculitis, cellulitis, impetigo, bacterial conjunctivitis
MRSA (Methicillin-resistant staphylococcus aureus)
Gram + coagulase + cocci clusters catalase + beta-hemolytic virulence: produces toxin, coat pos.
Staphylococcus epidermis
Gram + coagulase - cocci clusters catalase + virulence: biofilm disease: infection of urine catheters, prosthesis, etc
Staphylococcus saprophyticus
Gram + coagulase neg cocci clusters catalase + disease: UTI
Bacillus anthracis
Gram + rod/bacillus aerobic virulence: spore-forming, antiphagocytic capsule, exotoxin disease: Anthrax
Bacillus Cereus
Gram + rod/bacillus aerobic virulence: spore forming, motile, exotoxin (enterotoxin) disease: food poisoning (rice/grains)
Clostridium botulinum
Gram + rod/bacillus anaerobic virulence: exotoxin disease: botulism honey w/ babies under 1
Clostridium tetani
Gram + rod/bacillus anaerobic virulence: exotoxin disease: tetanus
Clostridium perfringens
Gram + rod/bacillus anaerobic virulence: exotoxin disease: "gas gangrene", cellulitis, myonecrosis, diarrhea
Clostridium defficile
Gram + rod/bacillus anaerobic virulence: exotoxin disease: pseudomembranous colitis
corynebacterium diphtheriae
Gram + rod/bacillus non-spore forming virulence: exotoxin disease: diphtheria
Listeria monocytogenes
Gram + rod/bacillus non-spore forming virulence: flagella disease: neonatal meningitis (high risk in pregnant women)
Neisseria meningitis
Gram - diplococci virulence: capsule, endotoxin (LPS), pili disease: meningitis presentation: petechiae, sepsis
Neisseria gonorrhoeae
Gram -
diplococci
virulence: pili
disease: neonatal conjunctivitis, PID
Moraxella catarrhalis
Gram -
coccobacillus
disease: otitis media, sinusitis, bronchitis, pneumonia
Enterotoxigenic E coli
Gram - rod/bacillus enteric virulence: exotoxin, pili Disease: travelers diarrhea presentation: rice-water stool similar to cholera
Enterohemorrhagic E coli
Gram - rod/bacillus enteric virulence: exotoxin (shiga-like toxin), pili disease: hemorrhagic colitis presents: bloody diarrhea
Enteroinvasive E coli
Gram - rod/bacillus enteric virulence: exotoxin, plasmid presentation: bloody diarrhea (same disease state as shigella)
E coli UTI
Gram -
rod/bacillus
enteric
Disease: UTI
E coli meningitis
Gram -
rod/bacillus
enteric
Disease: neonatal meningitis
E. coli sepsis
Gram -
rod/bacillus
enteric
Disease: gram neg sepsis (most common cause)
E coli pneumonia
Gram -
rod/bacillus
enteric
Disease: hospital acquired PNA
Klebsiella pneumonia
Gram - rod/bacillus enteric virulence: capsule Disease: sepsis, UTI, pneumonia *currant jelly sputum
Proteus mirabilis
Gram -
rod/bacillus
enteric
Disease: UTI, nosocomial infections
enterobacter
Gram - rod/bacillus enteric virulence: motile Disease: hospital acquired infections
Shigella
Gram - rod/bacillus enteric virulence: shiga toxin presentation: bloody diarrhea similar to enteroinvasive coli, fecal-oral transmission through human host
Salmonella
Gram - rod/bacillus enteric Disease: gastroenteritis food/water contaminated by animal feces (chicken, uncooked eggs)
Salmonella typhi
Gram - rod/bacillus enteric Disease: typhoid fever facultative intracellular parasite, chronic carriers-gallbladder
Vibrio cholera
Gram - rod/bacillus enteric virulence: flagellum, cholera toxin Disease: cholera presentation: rice-water diarrhea fecal-contaminated water, similar to enterotoxin ecoli
Campylobacter jejuni
Gram - rod/bacillus enteric presentation: bloody, loose diarrhea wild/domestic animals/poultry
Helicobacter pylori
Gram -
rod/bacillus
enteric
duodenal/gastric ulcers
Haemophilus influenza
Gram - rod/bacillus respiratory virulence: capsule (6 types) Disease: meningitis, epiglottitis, septic arthritis, otitis media HIB Vaccine
Bordetella pertussis
Gram - rod/bacillus respiratory Disease: whooping cough treatment: supportive erythromycin vaccine
Legionella pneumophilia
Gram - rod/bacillus respiratory Disease: legionnaire disease water environments
Yersinia enterocolitica
Gram - rod/bacillus zoonotic Disease: gastroenteritis similar presentation as salmonella/shigella
Yersinia pestis
Gram - rod/bacillus zoonotic Disease: bubonic plague presentation: hemorrhage under skin (Black Death) rats/fleas
Francisella tularenis
Gram - rod/bacillus zoonotic Disease: tularemia presentation: ulceroglandular disease, pneumonia rabbits/ticks/deerflies
Brucella
Gram - rod/bacillus zoonotic Disease: brucellosis infected animal meat or milk products
Pasteurella multocida
Gram -
rod/bacillus
zoonotic
cat/dog bite
Mycobacteria tuberculosis
acid-fast rod/bacillus obligate aerobic disease: tuberculosis caseous necrosis
Mycobacterium leprae
acid-fast
rod/bacillus
aerobic
Disease: Hansen disease (leprosy)
Atypical mycobateria
acid-fast rod/bacillus aerobic MAC opportunistic infection
Mycoplasma pneumoniae
no cell wall
disease: bronchitis, pneumonia
Ureaplasma urealyticum
no cell wall
UTI
urethritis
Trepenema pallidium
needs dark field microscopy/immunofluorescence
spiral/spirochete
virulence: LPS (lipid A), additional outer membrane, axial flagella
disease: syphillis
Borrelia burgdorferi
needs dark field microscopy/immunofluorescence
spiral/spirochete
virulence: LPS (lipid A), additional outer membrane, axial flagella
Disease: lyme disease
presentation: erythema, chronic migrans, neurologic damage
white-footed mouse/white tailed deer
Leptospira
needs dark field microscopy/immunofluorescence
spiral/spirochete
virulence: LPS (lipid A), additional outer membrane, axial flagella
urine of dogs, rats, livestock, wild animals
Chlamydia trachomatis
obligate aerobe
intracellular
presentation: conjunctivitis, urethritis, PID
Rickettsia rickettsii
obligate aerobe
intracellular
disease: Rocky Mountain spotted fever
presentation: fever, conjunctival redness, headache, palmar rash